<p>AT&amp;T has an ampersand in their name</p>
<p>this &amp; that</p>
<p>4 &lt; 5 and 6 &gt; 5</p>
<p><a href="http://example.com/autolink?a=1&amp;b=2">http://example.com/autolink?a=1&amp;b=2</a></p>
<p><a href="/script?a=1&amp;b=2">inline link</a></p>
<p><a href="http://example.com/?a=1&amp;b=2">reference link</a></p>